14results about "Storage discharge welding" patented technology

The invention relates to a method for processing and joining bipolar plates (10) which are provided with sealing seams (56) for sealing between an active area (14) and media ports (18, 20, 22, 24, 26). At least the following process steps are carried out: In process step a), a warped bipolar plate (10, 54) is provided in a processing and joining station (28); in process step b), processing tools (34, 38) and joining tools (31) are positioned against the warped bipolar plate (10, 54) such that the joining tools (31) exert a holding and joining force (64) on the warped bipolar plate (10, 54). According to process step c), the machining tools (34, 38) contact the distorted bipolar plate (10, 54) and produce a plastic deformation (68) of the distorted bipolar plate (10, 54) by means of a straightening force (62).Subsequently, in process step d), a material-bonded electrical contact (82) is created on one side of the previously straightened bipolar plate (10, 84). Following process step e), the processing and joining station (28) is opened (78, 80) and the joined and straightened bipolar plate (10, 84) is removed.

The invention relates to a method for the hybrid joining of at least two very thin joining partners (1) made of one or more electrically conductive and weldable materials. The method initially comprises a process step in which the at least two very thin joining partners (1) are formed, coated, provided with a local application, or their surface is structured such that defined cavities (2) and defined joining points (3) are created. The at least two very thin joining partners (1) are joined together such that adhesive channels (4) and / or flow channels (5) are formed from the defined cavities (2), and contact points (6) are formed from the defined joining points (3).The at least two very thin joining partners (1) are wholly or partially coated with an adhesive (7) on at least one side, or the defined cavities (2) from which the adhesive channels (4) are formed are filled with adhesive (7), or the formed adhesive channels (4) are filled with adhesive (7). A material-bonded connection is simultaneously produced at at least two contact points (6) by resistance welding.

The present invention relates to a method for producing a battery cell contact and to a battery cell comprising a battery cell contact produced according to the method. In the method for producing a battery cell contact (10), a battery cell housing element (2) with an opening (60), a connecting element (30) for producing an electrically conductive connection with an electrode, and at least one contact element (20) for realizing an electrically conductive interface are provided. The connecting element (30) is inserted into the opening (60) along an insertion direction (61) so that it passes through the opening (60), and the contact element (20) is welded to the connecting element (30) by means of a capacitor discharge welding process, thereby producing an electrically conductive connection from the contact element (20) to the connecting element (30) that passes through the opening (60) of the battery cell housing element (2). The proposed method for producing a battery cell contact and the battery cell comprising a battery cell contact produced according to the method provide solutions for the design of a battery cell that offer a reliable contacting option for an electrode in a simple, cost-effective and space-saving manner.

The application provides a kind of energy storage spot welding method of step honeycomb with shielding structure in welding position, and the technical scheme comprises the following steps: step one: dividing welding point area on the surface of honeycomb to be spot welded;Step two: design the positive electrode of electrode.Step three: design the negative electrode holder according to the size of the outer surface of the shell part, so that the current flows out from the shortest path.Step four: determine the number N of welding points in each spot welding area.Step five: adjust the spot welding voltage and try welding on the surface.Step six: assemble the honeycomb to the shell part.Step seven: replace the corresponding positive electrode in turn, and complete the energy storage spot welding.The application has the following advantages: improving the spot welding quality of step honeycomb, making the positioning strength of honeycomb meet the subsequent vacuum brazing welding requirements, improving the welding qualification rate of parts, avoiding parts rework or scrap, saving processing cost, achieving good benefit effect, and the economic benefit will also be greatly improved.

This invention provides a kitchen-type capacitor-energy-storage spot welding device, belonging to the technical field of welding equipment. It includes an input conversion unit, whose input end is connected to the power grid and whose output end is connected to an intermediate DC bus. The input conversion unit is internally configured with a power factor correction circuit. An energy storage unit is connected in parallel to the intermediate DC bus and includes multiple sets of parallel-connected capacitor energy storage branches and corresponding switching control switches for each branch. The initial capacitance values ​​of each capacitor energy storage branch are configured according to a geometric series, so that the dynamic adjustment step size of the energy storage capacity matches the exponential decay characteristic of the bus voltage. An inverter unit adopts a full-bridge converter topology, with its DC side connected to the energy storage unit, used to modulate the DC current into a high-frequency pulse current. This kitchen-type capacitor-energy-storage spot welding device can improve the yield rate of kitchen equipment in batch welding processes and effectively reduce defects such as spatter, incomplete soldering, and surface oxidation of solder joints.

Bumper support as side impact protection for a motor vehicle body, which is manufactured by forming from a strip-shaped metal sheet, consisting of a first profile (1) with a three-dimensional structure and a second component (2) which spatially closes the first profile (1), wherein the two components have overlapping surfaces (6, 7) which serve for welding, characterized in that the welding is carried out by capacitor pulse welding, wherein the length of the weld seams (9), which extend continuously or with small interruptions along the longitudinal axis of the profile (1), add up to a total length (L2) which corresponds to at least half the length of the profile (L1).

Method for resistance welding a first component (12) to a second component (14), wherein the second component (14) is inserted into an opening (12a) of the first component (12) at least with a connection area (38) by an insertion path (36) and is welded in place, wherein an inner dimension (12b) of the opening (12a) and an outer dimension (14b) of the connection area (38) are designed similarly to an interference fit, wherein the insertion path (36) is limited by a preferably adjustable external displacement limiter (32), wherein during insertion the first component (12) is held by a first holding device (28) and the second component (14) is held by a second holding device (30), characterized in that the displacement limiter (32) is rigidly connected to one of the two holding devices (28, 30).

A method and apparatus for treating a welded joint between a hot-rolled steel rail and a heat-treated steel rail. The method comprises: performing zonal controlled cooling on a hot-state welded joint formed by welding a hot-rolled eutectoid pearlite steel rail and a heat-treated eutectoid pearlite steel rail, wherein a heat-affected zone on one side of the hot-rolled eutectoid pearlite steel rail is slowly cooled under the condition of heating temperature compensation, and a heat-affected zone on one side of the heat-treated eutectoid pearlite steel rail is subjected to accelerated cooling under the action of a cooling medium, until the surface temperature of the welded joint is reduced to a temperature threshold value; and cooling the welded joint, which has been subjected to the zonal controlled cooling, in an environment until the surface temperature is reduced to an ambient temperature. The apparatus of the present invention is used for implementing the zonal controlled cooling. The method and apparatus can improve the matching of hardness between the heat-affected zones on two sides of a welding seam and between the heat-affected zones on the two sides and steel rail base materials having different strengths.

The invention relates to the technical field of integrated circuit manufacturing, and particularly discloses an energy storage welding machine and a welding method thereof.The energy storage welding machine is used for welding a tube shell and a cap and comprises an upper electrode and a lower electrode; wherein the upper electrode is provided with a plurality of lead wire grooves, and the positions of the lead wire grooves are in one-to-one correspondence with the lead wires on the tube shell; the diameter of each lead groove is larger than the diameter of the corresponding lead but smaller than the diameter of the insulator connected with the lead, the height of the insulator is lower than the upper end face and the lower end face of the tube shell, each lead penetrates into the corresponding lead groove in the welding process, and the lead grooves do not directly make contact with the leads and the insulator; the lower electrode is provided with a cap positioning groove, the cap can be embedded into the cap positioning groove after being inverted, and the tube shell is inverted on the cap. According to the energy storage welding machine provided by the invention, circuit indentations can be obviously reduced on the premise of not reducing the quality of a welding seam.

The invention relates to a method for producing a drive component (1) for a vehicle, the drive component (1) comprising at least a differential (2) and a differential gear (3), and the method comprising the steps of: - providing a differential gear (3) having an axis of rotation (31), outer teeth (33) and an inner gear body (32) which extends from the outer teeth (33) toward the axis of rotation (31) and which has an inner opening (34), - providing a differential (2) having a differential housing (21), the differential housing (21) having a circumferential fastening flange (22), - inserting the differential housing (21) into the inner opening (34) of the inner gear body (32), and - establishing a mechanical connection between the fastening flange (33) of the differential housing (21) and the inner gear body (32) of the differential gear (33). According to the invention, the fastening flange (22) is welded directly to the inner gear body (32) in a step of capacitor discharge welding. The invention also relates to a drive component (1) produced by means of said method.

The utility model relates to the technical field of vacuum cup production, in particular to an automatic welding production line for a vacuum cup bottom sheet, which comprises a conveying line, a welding line and a welding line, the safety fence is arranged around the conveying line, the inner side of the safety fence is a working area, the outer side of the safety fence is a safety area, the safety fence is provided with an opening penetrating through the two ends, the conveying line penetrates through the opening, and the two ends of the conveying line extend to the safety area to form a feeding end and a discharging end; the energy storage welding machine is arranged on the side face of the conveying line and used for welding the workpieces; the grabbing robot is arranged on the side face of the conveying line, is adjacent to the energy storage welding machine and is used for grabbing the workpieces on the conveying line and placing the workpieces to the energy storage welding machine; and the temperature measuring machine is arranged at the feeding end. Compared with the prior art, the automatic workpiece grabbing and welding system has the advantages that automatic conveying, grabbing, positioning and welding of workpieces are achieved through cooperation of the conveying line, the grabbing robot and the energy storage welding machine, manual intervention is reduced, production efficiency is remarkably improved, and the automatic workpiece grabbing and welding system is suitable for large-batch production requirements.

The invention relates to the technical field of energy storage welding, and provides a process parameter calculation method, system and equipment based on energy storage welding and a medium. The method comprises the steps that target parameters such as an energy storage component, a welding process, the size of a to-be-welded component and material characteristics are obtained; combing the correlation between the resistance ratio and the energy ratio and screening the optimal ratio; according to the physical relation between the contact resistance and the contact area, the deformation amount needed by an energy ring is calculated, the set pressure intensity is obtained by combining material characteristic parameters, meanwhile, the set input voltage is calculated through parameters such as welding energy density, and the two parameters serve as equipment technological parameters for welding. According to the method, the known welding related information is calculated, so that the process parameters are quickly obtained, the test and trial-and-error cost is reduced, the verification period is shortened, and the product import efficiency is effectively improved.

The invention provides an energy storage spot welding method and a welding seam quality monitoring method. The energy storage spot welding method comprises the steps that preheating treatment is conducted on a welding object through an energy storage spot welding machine, and preheating pulse current is adopted by the energy storage spot welding machine; after preheating treatment, spot welding treatment is conducted on the welding object through an energy storage spot welding machine, welding pulse current is adopted by the energy storage spot welding machine, the current value of the welding pulse current is larger than that of the preheating pulse current, and the pulse time of the welding pulse current is larger than that of the preheating pulse current; and after the spot welding treatment is executed for a preset time, gradually reducing the current value of the welding pulse current until the current value of the welding pulse current is reduced to 0.